Flea
21
Technical T
utorial
Technical Tutorial
The following section contains useful information about noise reduction and how your
Flea
will improve your viewing experience
2D Spatial and 3D Temporal Filtering
Your
Flea
reduces mosquito noise by looking at and comparing the content of the spatial
(
2D
) and temporal (
3D
) domains. You can set the filtering level for each.
2D Spatial Filtering
With 2D spatial filtering, images are treated as static and mosquito noise is reduced on a
picture by picture basis. To experiment and view the effect of various settings and set 2D
level filtering, you can put your video on «pause». You will see the effect on the paused
image when you increase or decrease the filtering level.
3D Temporal Filtering
Temporal filtering (
3D
) looks at images one after the other, over time. The
Flea
searches
for moving pixels in the images, then correlates this information with 2D spatial filtering.
You cannot see the effect of 3D filtering when you apply it while your video is paused.
Its effect is only visible on moving pictures.
